Logical problems practice test

1.

In Arun opinion, his weight is greater than 65 kg but less than 72 kg. His brother doesnt not agree with Arun and he thinks that Aruns weight is greater than 60 kg but less than 70 kg. His mother’s view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

Answer: Option A

Explanation:

If all are correct the waight should be 66 or 67

from the options it is 67.

2.

Compare the knowledge of persons X, Y, Z, A, B and C in relation to each other.

1.X knows more than A.

2.Y knows as much as B.

3.Z knows less than C.

4.A knows more than Y

The best knowledge person amongst all is:

Answer: Option A

Explanation:

Clearly, we have : A < X, Y = B, Z < C, Z < B, Y < A  thus the sequence becomes X > A >Y = B > C > Z.So, X is the best knowledgeable person.2.Five children were dministrated psychological tests to know their intellectual levels. In the report, psychologists pointed out that
the child A is less intelligent than the child B. The child C is less intelligent than the child D. The child B is less intelligent than the child C and child A is more intelligent than child E.

3.

Read the following information carefully and answer the questions

given below it:

(A)Gopal is shorter than Ashok but taller than Kunal.

(B)Navin is shorter than Kunal.

(C)Jayesh is taller than Navin.

(D)Ashok is taller than Jayesh.

Who among them is the tallest?

Answer: Option B
4.
Answer the questions on the basis of the information given below. The Head of a newly formed government desires to appoint five of the six elected members A, B, C, D, E and F to portfolios of Home, Power, Defence, Telecom and Finance. F does not want any portfolio if D gets one of the five. C wants either Home or Finance or no portfolio. B says that if D gets either Power or Telecom then she must get the other one. E insists on a portfolio if A gets one.
Which is a valid assignment?
Answer: Option B

Explanation:

From the above information we can infer that option (2) is correct.

5.

Five children are sitting in a row. S is sitting next to P but not T. K is sitting next to R who is sitting on the extreme left and T is not sitting next to K. Who are sitting adjacent to S ?

Answer: Option D

Explanation:

S is sitting next to P . So the order S,P or P,S is followed. K is sitting next to R. So, the order R, K is followed  because R is on the extreme left. T is not next to P or K. So the arrangement will be R, K,P,S,T. Clearly, P and T are sitting adjacent to S.

6.

Directions (Q6-10):- Read the following information and answer the questions given below it:  

(1)Seven students P, Q, R, S, T, U and V take a series of tests.
(2)No two students get similar marks.
(3)V always scores more than P.
(4)P always scores more than Q.
(5)Each time either R scores the highest and t gets the least or alternatively S scores the highest and U or Q scores the least.

If S is ranked sixth and Q is ranked fifth, which of the following can be true ?

Answer: Option D

Explanation:

V > P, P > Q i,e V > P > Q.
If R scores the highest, we have R > ———- > T.
If S scores the highest, we have S > ———– > Q
or S > ———- > U.
If S is ranked sixth and Q is ranked  fifth,we have _ > _ > _ > _ > Q > S > _ In this case, R will ran the highest and thus T will rank the least. we have R > _ > _ > _ > Q > S > T Also, the order V > P > Q will be maintained i,e V and P will have second, third or fourth places. So, statements (a), (b), (c), (e) cannot follow. Thus (d) is the answer.

7.

If R gets more, V should be ranked not lower than:

Answer: Option C

Explanation:

If R ranks most, T ranks lowest and occupies seventh place. Since V always ranks above P and Q so in the maximum, P and Q will occupy fifth and sixth places. Thus, V will not rank lower than fourth.

8.

If R is ranked second and Q is ranked fifth, which of the following Must be true?

Answer: Option B

Explanation:

If R is ranked second, S will rank first and Q and U lowest. But Q ranks fifth. So, U ranks lowest. Also, the order V > P > Q will be followed. So, the arrangement will be S > R > V > P > Q > _ U. Thus , the sixth place will be occupied by T.

9.

If S is ranked second, which of the following can be true?

Answer: Option A

Explanation:

If S ranks second, R ranks first and T ranks lowest. The order V > P > Q will be followed. So, the arrangement will be R > S > _ > _ > _ > _ > T. Clearly, statements (b), (c), (d) and (e) cannot follow. so the answer is (a).

10.

If V is ranked fifth, which of the following must be true?

Answer: Option A

Explanation:

If V ranks fifth, P and Q coming before it will occupy sixth and  seventh places respectively i,e Q ranks least.So, S will score the highest.

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